package com.lionel.test;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;

public class AtomicUse {
	private static AtomicInteger count = new AtomicInteger(0);
	//synchronized
	public synchronized int multiAdd() {
		try {
			Thread.sleep(100);
		} catch (InterruptedException e) {
			e.printStackTrace();
		}
		count.addAndGet(1);
		count.addAndGet(2);
		count.addAndGet(3);
		count.addAndGet(4);
		return count.get();
	}
	public static void main(String[] args) {
		final AtomicUse au = new AtomicUse();
		List<Thread> ts = new ArrayList<>();
		for (int i = 0; i < 100; i++) {
			ts.add(new Thread(new Runnable() {
				@Override
				public void run() {
					System.out.println(au.multiAdd());
				}
			}));
		}
		for (Thread t : ts) {
			t.start();
		}
	}
}
